XSPC DDC Top Issue w/ G 1/4 outlet hole

Just got my acrylic DDC pump top and ran into an issue with the outlet of the top. It seems it may be slightly tapered resulting in a fitting that doesn't quite get to the point of compressing the o-ring ~ instead it gets stuck maybe one-rung out before bottoming.

Anyone run into this issue before? I can take a wrench to it but I'm afraid of cracking it, it'll also be impossible to tell the "finger tight" point doing this